docs: def _check_guts_toc(attr, old, toc, last_build, pyc=0):
      """
      rebuild is required if either toc content changed if mtimes of
      files listed in old toc are newer than ast_build
  
      if pyc=1, check for .py files, too
      """
      return (_check_guts_eq(attr, old, toc, last_build)
              or _check_guts_toc_mtime(attr, old, toc, last_build, pyc=pyc))